<?php 
if (isset($_GET['dir'])){ //config the basedir 
    $basedir=$_GET['dir']; 
}else{ 
    $basedir = '.'; 
}
 
$auto = 1;
 
checkdir($basedir);
 
function checkdir($basedir){ 
    if ($dh = opendir($basedir)) { 
        while (($file = readdir($dh)) !== false) { 
            if ($file != '.' && $file != '..'){ 
                if (!is_dir($basedir."/".$file)) { 
                    echo "filename: $basedir/$file".checkBOM("$basedir/$file")."<br>"; 
                }else{ 
                    $dirname = $basedir."/".$file; 
                    checkdir($dirname); 
                } 
            } 
        } 
    closedir($dh); 
    } 
}
 
function checkBOM ($filename) { 
    global $auto; 
    $contents = file_get_contents($filename); 
    $charset[1] = substr($contents, 0, 1); 
    $charset[2] = substr($contents, 1, 1); 
    $charset[3] = substr($contents, 2, 1); 
    if (ord($charset[1]) == 239 && ord($charset[2]) == 187 &&ord($charset[3]) == 191) { 
        if ($auto == 1) { 
            $rest = substr($contents, 3); 
            rewrite ($filename, $rest); 
            return ("<font color=red>BOM found,automatically removed.</font>"); 
        } else { 
            return ("<font color=red>BOM found.</font>"); 
        } 
    } 
    else return ("BOM Not Found."); 
}
 
function rewrite ($filename, $data) { 
    $filenum = fopen($filename, "w"); 
    flock($filenum, LOCK_EX); 
    fwrite($filenum, $data); 
    fclose($filenum); 
} 
?>